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ISO 683-17 20NiCrMo7 vs SAE J404 4320

Strong Match — 98.2% match based on chemical composition and mechanical property overlap.

ISO 683-17 20NiCrMo7 (ISO 683-17:1999) and SAE J404 4320 (SAE J404:2009) are both steel grades. Both fall under the Alloy Steel category. ISO 683-17 20NiCrMo7 is typically used for used in large gears, turbine shafts, marine gearboxes, heavy-duty pinions, and industrial transmissions., while SAE J404 4320 is commonly used for used for gears, shafts, aircraft components, pinions, axles, and transmission parts.. ISO 683-17 20NiCrMo7 is defined under International Organization for Standardization (ISO), originating from International, while SAE J404 4320 is defined under SAE International, originating from United States.

As per chemical composition, ISO 683-17 20NiCrMo7 vs SAE J404 4320 is a 98.2% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 98.2%.

Frequently Compared With ISO 683-17 20NiCrMo7:
UNI 11234 100Cr6 NF A35-565 100C6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
98.2%
MECHANICAL MATCH
No shared data
OVERALL
98.2%
Specifications
Property ISO 683-17 20NiCrMo7 SAE J404 4320
Standard ISO 683-17:1999 SAE J404:2009
Category Alloy Steel Alloy Steel
C (%) 0.17-0.22 0.17-0.22
Si (%) 0.15-0.30 0.15-0.35
Mn (%) 0.45-0.65 0.45-0.65
Cr (%) 0.40-0.60 0.40-0.60
Mo (%) 0.20-0.30 0.20-0.30
Ni (%) 1.65-2.00 1.65-2.00
P (%) <=0.035 <=0.030
S (%) <=0.040 <=0.040
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ISO 683-17 20NiCrMo7 SAE J404 4320
Tensile Strength 1000-1300 MPa Not specified
Yield Strength 800 MPa min Not specified
Elongation 9-12% Not specified
Hardness 300-360 HB Not specified
Typical Applications
ISO 683-17 20NiCrMo7
Used in large gears, turbine shafts, marine gearboxes, heavy-duty pinions, and industrial transmissions.
SAE J404 4320
Used for gears, shafts, aircraft components, pinions, axles, and transmission parts.
Can ISO 683-17 20NiCrMo7 Be Substituted With SAE J404 4320?
ISO 683-17 20NiCrMo7 and SAE J404 4320 overlap closely enough on chemistry and mechanical properties that SAE J404 4320 is often considered as a substitute for ISO 683-17 20NiCrMo7 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
ISO 683-17 20NiCrMo7
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6600–7000 mm (259.84–275.59 in)
SAE J404 4320
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4600–4600 mm (181.1–181.1 in)
On M-EX Right Now
ISO 683-17 20NiCrMo7
2 active listings and RFQs →
SAE J404 4320
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ISO 683-17 20NiCrMo7 and SAE J404 4320?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ISO 683-17 20NiCrMo7 be substituted with SAE J404 4320?
ISO 683-17 20NiCrMo7 and SAE J404 4320 overlap closely enough on chemistry and mechanical properties that SAE J404 4320 is often considered as a substitute for ISO 683-17 20NiCrMo7 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.